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Title: Topological Anderson insulator in disordered photonic crystals
Authors: Liu, Gui-Geng
Yang, Yihao
Ren, Xin
Xue, Haoran
Lin, Xiao
Hu, Yuan-Hang
Sun, Hong-xiang
Peng, Bo
Zhou, Peiheng
Chong, Yidong
Zhang, Baile
Keywords: Science::Physics
Issue Date: 2020
Source: Liu, G.-G., Yang, Y., Ren, X., Xue, H., Lin, X., Hu, Y.-H., . . . Zhang, B. (2020). Topological Anderson insulator in disordered photonic crystals. Physical Review Letters, 125(13), 133603-. doi:10.1103/PhysRevLett.125.133603
Project: MOE2016-T3-1-006
Journal: Physical Review Letters
Abstract: Recent studies have revealed the counterintuitive possibility that increasing disorder can turn a topologically trivial insulator into a nontrivial insulator, called a topological Anderson insulator (TAI). Here, we propose and experimentally demonstrate a photonic TAI in a two-dimensional disordered gyromagnetic photonic crystal in the microwave regime. We directly observe the disorder-induced topological phase transition from a trivial insulator to a TAI with robust chiral edge states. We also demonstrate topological heterostructures that host edge states at interfaces between domains with different disorder parameters.
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.125.133603
DOI (Related Dataset): 10.21979/N9/R5PIL8
Schools: School of Physical and Mathematical Sciences 
Research Centres: Centre for Disruptive Photonic Technologies (CDPT) 
The Photonics Institute 
Rights: © 2020 American Physical Society. All rights reserved. This paper was published in Physical Review Letters and is made available with permission of American Physical Society.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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